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Thread: Screw threads?

  1. #1
    Join Date
    Jul 2011
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    United Kingdom
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    338

    Screw threads?

    Can someone tell me what the thread is on the foregrip/vert ASA screws?

  2. #2
    Join Date
    May 2009
    Location
    nj
    Posts
    782
    Classic rail single screw is 1/4-20

    Dual RT is 10-32 (IIRC)

  3. #3
    That's right. If you're using a 1/4-20 screw, it can't be a standard socket head screw from the hardware store. If so, the head will be too tall to fit between the body and rail. It needs to be a low-profile style socket head screw, which are never available at the hardware stores I frequent.

  4. #4
    Join Date
    Jun 2009
    Location
    Kentucky
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    4,140
    Ace has the button-head ones (Chinese hat type). You'll need to grind down the sides of the head to fit the rail though. If you don't have access to a shop, easiest way to do it is with a hand drill and a file. Put the screw in the drill and grind the sides of the head down on the file till it fits the hole...or get with Tuna to get a proper one.

  5. #5
    Join Date
    Jul 2011
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    United Kingdom
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    Ok thanks guys that's a great help

    I thought it was about a 1/4 but couldn't remember exact size

  6. #6
    Join Date
    Jan 2001
    Location
    Cottonwood, Az.
    Posts
    5,517
    The AM FG screw is called a "low head", you can get them here>>

    http://www.mcmaster.com/#socket-head-cap-screws/=lky7ji

  7. #7
    Join Date
    Jul 2011
    Location
    United Kingdom
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    338
    Thanks Luke

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